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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#include "elementlist.hxx"
#include <string.h>
#include <element.hxx>
#include <document.hxx>
namespace DOM
{
static xmlChar* lcl_initXmlString(::rtl::OUString const& rString)
{
::rtl::OString const os =
::rtl::OUStringToOString(rString, RTL_TEXTENCODING_UTF8);
xmlChar *const pRet = new xmlChar[os.getLength() + 1];
strcpy(reinterpret_cast<char*>(pRet), os.getStr());
return pRet;
}
CElementList::CElementList(::rtl::Reference<CElement> const& pElement,
::osl::Mutex & rMutex,
OUString const& rName, OUString const*const pURI)
: m_pElement(pElement)
, m_rMutex(rMutex)
, m_pName(lcl_initXmlString(rName))
, m_pURI((pURI) ? lcl_initXmlString(*pURI) : 0)
, m_bRebuild(true)
{
if (m_pElement.is()) {
registerListener(*m_pElement);
}
}
void CElementList::registerListener(CElement & rElement)
{
try {
Reference< XEventTarget > const xTarget(
static_cast<XElement*>(& rElement), UNO_QUERY_THROW);
OUString aType = OUString::createFromAscii("DOMSubtreeModified");
sal_Bool capture = sal_False;
xTarget->addEventListener(aType,
Reference< XEventListener >(this), capture);
} catch (Exception &e){
OString aMsg("Exception caught while registering NodeList as listener:\n");
aMsg += OUStringToOString(e.Message, RTL_TEXTENCODING_ASCII_US);
OSL_ENSURE(sal_False, aMsg.getStr());
}
}
void CElementList::buildlist(xmlNodePtr pNode, sal_Bool start)
{
// bail out if no rebuild is needed
if (start) {
if (!m_bRebuild)
{
return;
} else {
m_nodevector.erase(m_nodevector.begin(), m_nodevector.end());
m_bRebuild = false; // don't rebuild until tree is mutated
}
}
while (pNode != NULL )
{
if (pNode->type == XML_ELEMENT_NODE &&
(strcmp((char*)pNode->name, (char*)m_pName.get()) == 0))
{
if (!m_pURI) {
m_nodevector.push_back(pNode);
} else {
if (pNode->ns != NULL && (0 ==
strcmp((char*)pNode->ns->href, (char*)m_pURI.get())))
{
m_nodevector.push_back(pNode);
}
}
}
if (pNode->children != NULL) buildlist(pNode->children, sal_False);
if (!start) pNode = pNode->next;
else break; // fold back
}
}
/**
The number of nodes in the list.
*/
sal_Int32 SAL_CALL CElementList::getLength() throw (RuntimeException)
{
::osl::MutexGuard const g(m_rMutex);
if (!m_pElement.is()) { return 0; }
// this has to be 'live'
buildlist(m_pElement->GetNodePtr());
return m_nodevector.size();
}
/**
Returns the indexth item in the collection.
*/
Reference< XNode > SAL_CALL CElementList::item(sal_Int32 index)
throw (RuntimeException)
{
if (index < 0) throw RuntimeException();
::osl::MutexGuard const g(m_rMutex);
if (!m_pElement.is()) { return 0; }
buildlist(m_pElement->GetNodePtr());
if (m_nodevector.size() <= static_cast<size_t>(index)) {
throw RuntimeException();
}
Reference< XNode > const xRet(
m_pElement->GetOwnerDocument().GetCNode(m_nodevector[index]).get());
return xRet;
}
// tree mutations can change the list
void SAL_CALL CElementList::handleEvent(Reference< XEvent > const&)
throw (RuntimeException)
{
::osl::MutexGuard const g(m_rMutex);
m_bRebuild = true;
}
}
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